In August of 2014, The US Army Corps of Engineers announced its intention to develop a National Ordinary High Water Mark (OHWM) classification system. The use of the Rosen Stream Classification System is a major component of this new system. The Rosgen System was developed over 20 years ago and has become the industry standard for stream restoration work. However, its use as a means for making Jurisdictional Determinations is relatively new.

The Swamp School is pleased to offer this webinar on the Principles of the Rosgen Stream Classification System. This two-hour workshop will present an overview of the four main levels of a river hierarchy as well as an in-depth discussion of the fundamentals of Geomorphic Characterization (Level I) and Morphological Characterization (Level II). We also review the nine major stream types and their diagnostic features.

Our discussion will focus primarily on the use of the Rosgen System for classification purposes and how this system may be implemented as a future Jurisdictional Determination procedure. The Rosgen System is primarily used for stream restoration projects.